MIL-DTL-29229B, DETAIL SPECIFICATION: SWITCHES AND FROGS, TRACK, FABRICATED, FOR PORTAL CRANES (14-MAR-1997) [SUPERSEDING MIL-S-29229A]

MIL-DTL-29229B, DETAIL SPECIFICATION: SWITCHES AND FROGS, TRACK, FABRICATED, FOR PORTAL CRANES (14-MAR-1997) [SUPERSEDING MIL-S-29229A]., This document covers special fabricated track switches and frogs for portal crane tracks.